First Beta

Well it's official, I'm pregnant.  My beta at 17dpo is 168.  Most people would be thrilled with this but considering I got my first positive a week ago, I don't think it's high enough.  I go back Monday and for my numbers to double in 48 hours, we need a number of 476.  Please pray that my numbers rise accordingly.  I don't think I could handle a miscarriage at this point.